Colorado and OSU have both proposed having spring scrimmages with another school, something not currently permitted in football, though some other sports allow it.
OSU has apparently talked to Oklahoma about this as a replacement for the annual Bedlam game.
The NCAA squashed this request like a bug. We’ll see if CU takes this to court or just tries to get it through the Bylaws process. The fact that other NCAA sports allow this might be a legal wedge.